Add logging for XTIMEOUT/UnexpectedSuccess

[vharron]

Summary

If an expected timeout test times out, touch
<session-dir>/ExpectedTimeout-<test-name>

If an expected timeout test passes, touch
<session-dir>/UnexpectedSuccess-<test-name>

test/dosep.py

elif target.startswith("freebsd"):
             "TestWatchpointConditionAPI.py",
         }
     elif target.startswith("darwin"):
         expected_timeout |= {
             "TestThreadSpecificBreakpoint.py", # times out on MBP Retina, Mid 2012
         }
     return expected_timeout
 
+def touch(fname, times=None):
+    with open(fname, 'a'):
+        os.utime(fname, times)
+
 def main():
     # We can't use sys.path[0] to determine the script directory
     # because it doesn't work under a debugger
     test_directory = os.path.dirname(os.path.realpath(__file__))
     parser = OptionParser(usage="""\
 Run lldb test suite using a separate process for each test file.
 
        Each test will run with a time limit of 10 minutes by default.
""")
     if not dotest_options.s:
         # no session log directory, we need to add this to prevent
         # every dotest invocation from creating its own directory
         import datetime
         # The windows platforms don't like ':' in the pathname.
         timestamp_started = datetime.datetime.now().strftime("%Y-%m-%d-%H_%M_%S")
         dotest_argv.append('-s')
         dotest_argv.append(timestamp_started)
+        dotest_options.s = timestamp_started
+
+    session_dir = os.path.join(os.getcwd(), dotest_options.s)
 
     # The root directory was specified on the command line
     if len(args) == 0:
         test_subdir = test_directory
     else:
         test_subdir = os.path.join(test_directory, args[0])
 
     if opts.num_threads:
""")
     num_tests = len(failed) + len(passed)
 
     # remove expected timeouts from failures
     expected_timeout = getExpectedTimeouts(dotest_options.lldb_platform_name)
     for xtime in expected_timeout:
         if xtime in timed_out:
             timed_out.remove(xtime)
             failed.remove(xtime)
+            result = "ExpectedTimeout"
+        elif xtime in passed:
+            result = "UnexpectedSuccess"
+        else:
+            result = None  # failed
+
+        if result:
+            test_name = os.path.splitext(xtime)[0]
+            touch(os.path.join(session_dir, "{}-{}".format(result, test_name)))
 
     print "Ran %d tests." % num_tests
     if len(failed) > 0:
         failed.sort()
         print "Failing Tests (%d)" % len(failed)
         for f in failed:
             print "%s: LLDB (suite) :: %s (%s)" % (
                 "TIMEOUT" if f in timed_out else "FAIL", f, system_info
             )
         sys.exit(1)
     sys.exit(0)
 
 if __name__ == '__main__':
     main()